I'm sorry if I'm wrong, but I remember I read somwhere on this forum that Formspider has a kind of cleanup job(clean datasource tables, etc) it automatically schedules on install.
I've tried to find it on my system for 30 minutes but I've not found it.
Any help would be appreciated.
Thank you!

EDIT:

SOLVED:
There are two dbms_jobs which execute
- BDF_DELETE_OLDSESSIONS;
- BDF_DELETE_DIRTYOBJECTS;